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<H1>-t (set Type of archive) switch</H1>

<P>Specifies the type of archive.</P>

<H4>Syntax</H4>

<PRE class="syntax">
-t{archive_type}[:s{Size}][:r][:e][:a]
</PRE>

<DL>
  <DT>{archive_type}</DT>
    <DD> Specifies the type of archive. It can be: *, #, 7z, xz, split, zip, gzip, bzip2, tar, ....
    </DD>

  <DT>*:r</DT>
    <DD> Default mode. 7-Zip opens archive and subfile, if it's supported by format.
    </DD>

  <DT>*</DT>
    <DD> Opens only one top level archive.
    </DD>

  <DT>*:s{Size}[b | k | m | g]</DT>
    <DD>Sets upper limit for start of archive position.
        Default scan size is 8 MBytes "*:s8m".
        Example: "*:s0" means that it will open only file that has no any stub before archive.
    </DD>

  <DT>#</DT>
    <DD> Opens file in Parser mode, and ignores full archives.
    </DD>

  <DT>#:a</DT>
    <DD> Same as *, but it opens files with unknown extensions that contain archives in Parser Mode.
    </DD>

  <DT>#:e</DT>
    <DD> Opens file in Parser mode and checks all byte positions as start of archive.
    </DD>
</DL>

<P>If -t{archive_type} switch is not specified, 7-Zip uses extension of archive filename to 
  detect the type of archive. If you create new archive, -t{archive_type} switch is not 
  specified and there is no extension of archive, 7-Zip will create .7z archive.</P>

<P>If -t{archive_type} switch is not specified and archive name contains incorrect extension,
the program will show the warning.</P>

<P>It's possible to use the combined type (for example, mbr.vhd) for "Extract" and "List" 
commands for some archives.</P>
                             
<P>When you extract archive of some types that contains another 
archive without compression (for example, MBR in VHD), 7-Zip can open both 
levels in one step. If you want to open/extract just top 
level archive, use <SPAN class="filename">-t*</SPAN> switch.</P>

<P>Note: xz, gzip and bzip2 formats support only one file per archive.
If you want to compress more than one file to these formats,
create a tar archive at first, and then compress it with your selected format.</P>

<H4>Example</H4>

<PRE class="example">
7z a -tzip archive.zip *.txt
</PRE>

<P>adds all <SPAN class="filename">*.txt</SPAN> files from current directory 
to zip archive <SPAN class="filename">archive.zip</SPAN>.</P>

<PRE class="example">
7z t -t7z.split archive.7z.001
</PRE>

<P>tests all files in <SPAN class="filename">archive.7z.001</SPAN>. It also checks
that archive is multivolume .7z archive.</P>

<PRE class="example">
7z x -t# sfxarchive.exe
</PRE>

<P>extracts <SPAN class="filename">sfxarchive.exe </SPAN> in parser mode.</P>


<PRE class="example">
7z x -tiso archive.iso
</PRE>

<P>extracts files from <SPAN class="filename">archive.iso</SPAN> open as ISO archive.

<PRE class="example">
7z x -tudf archive.iso
</PRE>

<P>extracts files from <SPAN class="filename">archive.iso</SPAN> open as UDF archive.


<H4>Commands that can be used with this switch</H4>

<P>
  <A href="../commands/add.htm">a (Add)</A>,
  <A href="../commands/delete.htm">d (Delete)</A>,
  <A href="../commands/extract.htm">e (Extract)</A>,
  <A href="../commands/list.htm">l (List)</A>,
  <A href="../commands/test.htm">t (Test)</A>,
  <A href="../commands/update.htm">u (Update)</A>,
  <A href="../commands/extract_full.htm">x (Extract with full paths)</A>
</P>

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